Steam-trap.



Patented Mar. 6, |900.

w. .1. BALDWIN. STEAM TBAPV.

(Application led July 10, 1899.)

(No Model.)

Snom/Lto@ 7% @25% J" GHC/Lumi n. c. we wams vsrzns co., maremma..wAsmNaTo UNITED STATES PATENT OFFICE.

VILLIAM J. BALDWIN, OF NEW YORK, N. Y.

STAM-TRAP.

SPECIFICATION forming part 0f Letters Patent No. 644,568, dated March 6,1900.

Application led July 10, 1899. Serial No. 7231295. (No model.)

-To all whom t may concern:

Be it known that I, WILLIAM J. BALDWIN, a citizen of the United States,residing in the city of New York, borough of Brooklyn, State of NewYork, have invented certain new and useful Improvements in Steam-Traps,of which the following is a specification.

This invention relates to improvements in steam-traps, particularly ofthe type known as open-bucket or pot traps.

The purpose of the invention is to furnish a trap which shall contain initself both the by-pass, which is necessary in case of cleaning orrepairing the trap, and the steam-passages to and through the trap, andalso to control all'necessary changes of direction of the steam and-entrained water through or around the trap with the smallest possiblenumber of valves. My invention therefore provides a self-contained trapwith all passages, including a by-pass, arranged in the trap itself, sothat no separate construction of a by-pass is necessary where a trap isput in a steam plant.

Referring to the drawings which accompany the specification, Figure Ishows a horizontal section, partly in one plane and partly in another;and Fig. 2 is a central vertical section of the trap.

A is the body, B the cover, and C the float. The chamber b on the inletside of the trap connects with the drip-pipe D from the steam plantthrough the port c and with an outlet el, controlled by the valve E. Thesimilar chamber f on the outlet side of the trap connects with the pipeF, which leads to the sewer or other point of discharge by the port g, Gbeing a valve controlling the inlet to said chamber from channel 7i. Aby-pass composed of two passages j Z, the connection between which iscontrolled by the valve K, which is normally closed, is formed, asindicated, in the wall of trap A and leads from port c to port g. Achannel m in cover B leads from the channel 7a, which connects with theoutlet of said chamber b, to the port n, from which the steam andentrained water deliect over the bafie-plate Q and descend into theannular space between the trap A and iioat O. A pipe p, open at itslower' end, depends from cover B and at its upper end connects with oneend of the channel q, also formed on cover B and connecting at its otherend with the channel r, which leads to chamber f. A valve-disk R onlioat C closes the lower end of pipe p when said float rises and opensthe same when the float descends. As is well understood, the said lioatC rises as the condensed water runs into the trap and remains up untilthe water ilows over the top and fills said float, when it descends. Nowthe steam-pressure forces the water out from the float through pipe p tothe place of discharge, and the fioat being empty again rises, closingthe end of pipe p.

Should it be necessary to remove cover B to clean or repair the trap,valves E Gr are closed and valve K opened, and now the drip from thesteam plant goes away through bypass j Z, while cover B can be removedwithout danger or inconvenience. When the trap is cleaned orrepaired,the cover is again bolted on, valves E G opened, and valve 'Kclosed, and the trap operates as before.

Now, having described my improvements, I claim as my invention- 1. Aself -contained steam-trap having a pot-float and provided with an inletand an outlet, a by-pass from said inlet to said outlet in the wall ofthe trap, a valve controlling said by-pass, a cover provided with inletand outlet passages, and valves controlling the connections of saidpassages with the main inlet and outlet, substantially as described.

2. The combination in a steam-trap of a pot iioat adapted to control thedischarge from the trap, passages in the cover normally connecting theinlet with the interior of the trap and the interior of the trap withthe dischargeoutlet, valves controlling said passages, a by-pass in thewall of the trap leading from the inlet to the outlet and a valvecontrolling said by-pass, substantially as described.

WILLIAM J. BALDWIN. Witnesses:

HENRY V. BROWN, BERNARD J. IsEoKE.

